Assumption: you are referring to resource identity.
1. We can guess what drives Facebook/google/tweet buttons from configuration of these buttons. Its safe to assume configuration that the identity input is the URL itself. I am sure they probably generate guid or some other id out of the URL (SHA/MD5 or any other scheme) which gets persisted in their system. For BC fb/g+/tweet buttons, dynamic URL is based on the postid which gets sent to fb/g+ etc.

2. Don't know. But URL by definition is guaranteed to be unique. It can always serve as the primary key to identify a resource.

3. As far as I know, resource identification is always done on unique URL.

4. As I said, URL can always serve identity of an html resource. But if you are referring to other form identities, e.g. user identity then there is nothing special other than session based cookies. As far as I know html5 doesn't add anything extra for session or data persistence. Facebook and google session cookies are visible to you from dev tools in ie or firefox.

My 2cents, not sure if was helpful

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2. It is stated that FanVision has opened a new door to sports viewership - especially in the NFL and Nascar. It is said that it will work in sports where there are frequent pauses in game play - for obvious reasons - because one is busy while manipulating this device.

Question:
1. Do you think this is worth your money to augment the viewing experience of Cricket - (focus on only cricket)? (say it is included for a small fee when you buy the venue ticket and you see it on your phone)

2. You think it will catch on in different venues and widely accepted?

3. If you were to adopt the technology - what would you like to see as far as angles, close-ups - etc are concerned? e.g. footwork, where ball is pitched, live trajectories, putting iphone before your face in camera mode and seeing overlayed trajectory automatically? (there is such an app that aligns constellations while you look at the stars now - even from your living room!)

Its a gimmick, just like "holograph interview" during CNN's US election day coverage. They don't actually add value to a user experience on the game, and they don't add anything more than what you can already do with "spider-cam" already being used by in most cricket venue's.

Originally Posted by Blah
Its a gimmick, just like "holograph interview" during CNN's US election day coverage. They don't actually add value to a user experience on the game, and they don't add anything more than what you can already do with "spider-cam" already being used by in most cricket venue's.

I had a similar feeling as well. What of the 2nd part of my query - do you think that (FanCast) has value?

Originally Posted by zsayeed
I had a similar feeling as well. What of the 2nd part of my query - do you think that (FanCast) has value?

I don't follow NASCAR or NFL so couldn't comment on the games itself. But my understanding is that up-to-date and instant stats can supplement a gaming experience. But I don't see how a stand-alone device is going to help. People who want instant stats and player standings can look it on the giant screen (which every major game has and often updates) or check out their smart-phone.

I will go with gimmick. Its like creating a market for things that you don't actually need.